Design files (open-source software and hardware) for the Miniature Rocket Altimeter (AltStick) Project
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Hardware
Software
AltStick.jpeg
README.md

README.md

AltStick

Screenshot

Design files (open-source software and hardware) for the Miniature Rocket Altimeter (AltStick) Project.

The Hardware folder contains the PCB files created in Eagle

The Software folder contains:

  • Board and Programmer definition files for the Arduino IDE to target the AltStick
  • Arduino (1.0+) example files
    • Output barometric pressure and temperature via USB keyboard - open a text editor, press the button, and it starts typing
    • Height measurement - zeros out height and then starts sampling height change until button is pressed again - flashes out height (feet) on LED
    • LED cycling - tests out power consumption using sleep modes and watchdog timer
  • Bootloader code based on USBaspLoader (GitHub fork here).
    • No external programmer or hardware needed to program Arduino sketches once bootloader is programmed
    • Bootloader activated by holding down button and initiating a reset
    • Bootloader active and USB activity LEDs
  • Arduino libraries
    • PinChangeInt for generating an interrupt on button press during sleep modes
    • UsbKeyboard for using V-USB to emulate a USB keyboard for typing out measurements
  • Windows driver for USBasp

Additional info here: http://www.digitalmisery.com/projects/altstick